56523031 has 4 divisors (see below), whose sum is σ = 56606472. Its totient is φ = 56439592.

The previous prime is 56523017. The next prime is 56523037. The reversal of 56523031 is 13032565.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56523031 - 2⁷ = 56522903 is a prime.

It is a super-2 number, since 2×56523031² = 6389706066853922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56522987 and 56523005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56523037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40696 + ... + 42061.

It is an arithmetic number, because the mean of its divisors is an integer number (14151618).

Almost surely, 2^56523031 is an apocalyptic number.

56523031 is a deficient number, since it is larger than the sum of its proper divisors (83441).

56523031 is an equidigital number, since it uses as much as digits as its factorization.

56523031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83440.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 56523031 is about 7518.1800324281. The cubic root of 56523031 is about 383.7736454429.

Adding to 56523031 its reverse (13032565), we get a palindrome (69555596).

The spelling of 56523031 in words is "fifty-six million, five hundred twenty-three thousand, thirty-one".